CN113018119B - Multifunctional walking aid for old people and use method thereof - Google Patents

Abstract

The invention discloses a multifunctional walker for the elderly and its use method. The walker includes a frame body and a walking ladder mechanism; the walking ladder mechanism includes a controller, a driving wheel mechanism and a driven wheel mechanism. The driving wheel mechanism includes two The driving wheel assembly, the driving wheel assembly includes a driving motor, a first three-impeller and a second three-impeller, the driving motor is connected to the first rotating shaft through a deceleration and torque-increasing gear transmission mechanism, and the first rotating shaft and the second rotating shaft are transmitted through one-way power The mechanism is connected so that the driving motor drives the first rotating shaft to synchronously drive the second rotating shaft to rotate when it rotates in the forward direction, and the driving motor drives the first rotating shaft to drive the second rotating shaft to rotate synchronously when it rotates in the reverse direction, so that the first three The impeller and the second and third impellers can rotate relatively to the position where they overlap completely or form a complete circle. The invention can automatically carry out the operation of climbing stairs and steps, so as to better meet the travel needs of the elderly.

Description

A kind of multifunctional walking aid for the elderly and its use method

technical field

The invention relates to the technical field of aids for the elderly, in particular to a multifunctional walking aid for the elderly and a method for using the same.

Background technique

Patients with severe Parkinson's disease, stroke hemiplegia, and some elderly people have weak legs and difficulty walking. They need to use walkers to persist in walking exercises to effectively enhance the recovery of leg muscle strength, improve the quality of life and confidence in curing diseases. According to relevant statistics in 2017, 15% of people over the age of 40 in my country are at high risk of stroke, and it is increasing at an annual rate of 9%; there are more than 3 million Parkinson's patients, and the incidence of intellectuals is getting higher and higher. The disability of stroke and Parkinson's disease are mainly characterized by mobility impairment, so complications such as pressure sores, pneumonia and muscle atrophy follow. The vast majority of patient families, community elderly care institutions, and rehabilitation institutions have a huge demand for walking aids.

In recent years, there have been more and more researches on walking aids, and the forms of walking aids have been developed so far. There are single-legged crutches equipped with a seat board, four-legged walking aids, electric wheelchairs, etc. Their functions are in Support most of the weight of the old man's body during walking, reduce the pressure on the legs, or directly walk instead.

Existing walkers often only have one mode of use, that is, to support the elderly, and then assist the elderly to walk. The use mode is single. The walker is lifted as a whole to step over the steps or stairs, but the users of the walker are mostly elderly people with limited mobility, and this operation is very difficult for them, so the existing walker often cannot have the function of steps or stairs. Local use, these all make the existing walking aids can't meet the travel needs of the elderly well, the use performance is single, and the place of use is limited.

Contents of the invention

Aiming at the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a multi-functional walking aid for the elderly that can automatically perform the operation of climbing stairs and steps, so as to better meet the travel needs of the elderly. device.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

A multifunctional walking aid for the elderly, including a frame body and a walking ladder mechanism installed on the frame body;

The walking and climbing mechanism includes a controller, a driving wheel mechanism and a driven wheel mechanism distributed radially along the frame body, and the driven wheel mechanism includes two driven wheel assemblies distributed axially along the frame body, the The driving wheel mechanism includes two driving wheel assemblies axially distributed along the frame, and the driving wheel assembly includes a driving motor, a first three-impeller and a second three-impeller having the same dimensions as the first three-impeller, so There is a gap between two adjacent blades of the first three-blade wheel for climbing steps, and the first three-blade wheel and the second three-blade wheel can be rotated relative to each other to a position where they are completely overlapped or offset from each other to form a full circle contour , the first three-impeller is sleeved on the first rotating shaft, the second three-impeller is sleeved on the second rotating shaft, the first rotating shaft and the second rotating shaft are arranged coaxially, so that the first rotating shaft A three-blade wheel and the second three-blade wheel have the same center of rotation; the drive motor is electrically connected to the controller, so that the controller can control the rotation of the drive motor, and the drive motor The torque-increasing gear transmission mechanism is connected with the first rotating shaft, so that the power of the drive motor is transmitted to the first rotating shaft after deceleration and torque-increasing of the deceleration increasing torque gear transmission mechanism, and the first rotating shaft and the The second rotating shafts are connected through a one-way power transmission mechanism, so that the driving motor drives the first rotating shaft to rotate synchronously when the first rotating shaft rotates in the forward direction, and the driving motor drives the When the first rotating shaft rotates in the opposite direction, it cannot synchronously drive the second rotating shaft to rotate.

In this scheme, define the direction that is horizontal and perpendicular to the travel of the walker as the axial direction, and the direction that is vertical and perpendicular to the travel of the walker as the vertical direction.

The working principle of the present invention is: when performing operations such as climbing stairs and steps, the direction of the driving wheel mechanism is taken as the front of the walker at this time, and the hand is held on the frame. When in use, the controller first controls the driving motor Reverse rotation, so that the driving motor drives the first rotating shaft to rotate in the opposite direction. At this time, the second rotating shaft will not follow the rotation of the first rotating shaft. The impeller rotates from the position where it has a circular profile with the second three-impeller to the position that completely overlaps with the second three-impeller. At this time, the two three-impellers have a three-impeller profile as a whole; , the controller controls the drive motor to rotate in the forward direction, so that the drive motor drives the first rotating shaft to rotate in the forward direction. At this time, the first rotating shaft will synchronously drive the second rotating shaft to rotate, that is, the first three-impeller and the second three-impeller will also synchronously rotate Front rotation, when the first three-blade wheel and the second three-blade wheel rotate forward, the stairs or steps at the corresponding positions are blocked by using the gap between the two adjacent blades of the first three-blade wheel and the second three-blade wheel, and the first three-blade wheel The blades at the corresponding positions on the impeller and the second three-blade wheel will abut against the upper surface of the stairs or steps. At this time, the first three-blade wheels and the second three-blade wheels continue to rotate forward, and the two three-blade wheels that are abutted against the steps or stairs The blades rotate forward and drive the entire walker to lift and move forward, thereby completing the crossing of single-level steps or stairs. The gap between the two blades blocks the next level of stairs or steps to complete the next level of steps or stairs, so reciprocating can complete the multi-level steps and stairs.

When it is necessary to walk on a flat road after the stairs or steps are crossed, the controller controls the drive motor to rotate in reverse, and the drive motor rotates in reverse to drive the first shaft to rotate in reverse, and the first shaft to rotate in reverse to drive the first three impellers Rotate from the position completely coincident with the second three-blade wheel to the position where the second three-blade wheel has a circular profile as a whole. At this time, the two three-blade wheels form a circular profile shape as a whole, which can facilitate operation on flat roads.

Therefore, the multi-functional walking aid of this program uses the gap between each of the three impellers in the two three-impellers to block the steps or stairs when climbing stairs or steps through the change of the position state between the two three-impellers. , so as to achieve the purpose of climbing stairs or steps. At the same time, when running on flat roads, the two three-impellers rotate relative to each other to form an overall circular shape, so as to ensure normal operation on flat roads. Therefore, this scheme is It can assist the elderly to climb stairs or steps, and can also ensure normal operation on flat roads, so as to better meet the travel needs of the elderly.

Preferably, the deceleration and torque-increasing gear transmission mechanism includes a reducer, a driving gear and a driven gear, the input shaft of the reducer is connected to the rotating shaft of the driving motor, and the output shaft of the reducer is connected to the drive gear connected, the driven gear is connected to the first rotating shaft, and the driving gear and the driven gear are always in meshing state.

Like this, the running speed of the multifunctional elderly walker is often slower when in use, and when a person sits on the walker or is supported on the walker at the same time, the weight of the walker as a whole is relatively large, requiring a larger Torque is used to ensure the operation of the walker. Therefore, this scheme uses the reducer, driving gear and driven gear to reduce the output power of the drive motor by setting a deceleration and torque-increasing gear mechanism, so as to meet the needs of the walker. Travel speed and applied torque requirements.

Preferably, the one-way power transmission mechanism includes a ratchet and a pawl, the ratchet is connected to the first rotating shaft, and the outer circumference of the ratchet is provided with a number of one-way helical teeth, and the second rotating shaft A connection plate is provided at a position close to the ratchet, the pawl is hinged on the connection plate, and the pawl can extend into the tooth groove of the one-way helical tooth of the ratchet at the corresponding position, and The ratchet is clamped in the tooth groove of the one-way helical tooth when it rotates forward, and slides on the tooth back of the one-way helical tooth when the ratchet rotates reversely.

In this way, this solution sets a one-way power transmission mechanism so that the first rotating shaft only drives the second rotating shaft to rotate synchronously when it rotates in the forward direction, and the first rotating shaft does not drive the second rotating shaft to rotate synchronously when rotating in the reverse direction, so that the first rotating shaft It can drive the first and third impellers to rotate to the positions where they coincide with or displace the second and third impellers to form a circular contour, so as to meet the dual needs of climbing stairs and walking on flat roads. In this solution, in order to realize one-way transmission of power, a ratchet is provided on the first rotating shaft, and a ratchet is hinged on the second rotating shaft through a connecting plate. When the first rotating shaft rotates forward, the ratchet is clamped on the ratchet In the tooth groove of the one-way helical tooth, so that the second shaft rotates synchronously with the first shaft, and when the first shaft rotates in the opposite direction, the pawl is used to slide on the tooth back of the one-way helical tooth, so that the second shaft does not Rotating synchronously with the first rotating shaft, thereby realizing the one-way transmission of the power of the first rotating shaft.

Preferably, a mounting seat is provided on the frame body, the drive motor is mounted on the mounting seat, a mounting hole is opened on the first rotating shaft along its axial direction, and the second rotating shaft is far away from the connecting place. One end of the second three-impeller protrudes into the mounting hole, and the first rotating shaft protrudes into the mounting base and is rotationally connected with the mounting base through a bearing.

In this way, by providing the mounting seat, the driving motor is installed by using the mounting seat, and at the same time, the first rotating shaft is supported on the mounting seat through the bearing.

Preferably, the seat mechanism includes two seat assemblies axially distributed along the frame, the two seat assemblies are rotatably connected to the frame at corresponding positions, and the two seat assemblies One end far away from the frame body can be connected to each other to form a seat board for the human body to sit on, and the two seat board components can be separated from each other at the end connected to the frame body so as to allow the human body to stand when walking. space.

The walker of this solution has multiple ways of use. When used as a sitting wheelchair, the two seat components in the seat mechanism are connected to form a seat for the human body to sit and stand. At this time, the user can Sitting on the seat, the first and third impellers and the second and third impellers have a circular outline shape. At this time, the controller controls the drive motor to rotate forward, and the drive motor drives the first rotating shaft to rotate forward. At this time, under the action of the one-way power transmission mechanism, the first rotating shaft will drive the second rotating shaft to rotate synchronously, that is, the first three-impeller and the second three-impeller will rotate synchronously, thereby pushing the walker forward to realize the sitting The effect of walking.

When used as a standing walking aid function, the two seat board components in the seat board mechanism are separated to allow the standing space for the human body to walk. A circular outline shape, at this time, the controller controls the drive motor to rotate in the forward direction, and the drive motor drives the first rotating shaft to rotate in the forward direction. At this time, under the action of the one-way power transmission mechanism, the first rotating shaft will drive The second rotating shaft rotates synchronously, that is, the first three-blade wheel and the second three-blade wheel will rotate synchronously at this time, thereby pushing the walker forward and realizing the effect of standing walking aid.

Preferably, the seat mechanism includes a first seat assembly and a second seat assembly axially distributed along the frame, and the first seat assembly and the second seat assembly are movably connected to corresponding position on the frame, so that both the first seat assembly and the second seat assembly can rotate on the frame and slide along the axial direction of the frame. On the side of the seat board assembly far away from its connection with the frame body, a plurality of buckles are arranged at intervals along the traveling direction of the walker, and on the side of the second seat board assembly away from its connection with the frame body, along the walking aid A plurality of connection blocks are arranged at intervals in the travel direction of the traveler, and the connection blocks correspond to the buckles one by one, and a slot adapted to the outer dimension of the buckle is opened on the connection block, so that The buckle can extend into the slot at the corresponding position, and the axial distance between two adjacent connecting blocks is greater than the axial width of the buckle, so that the buckle can completely withdraw from the corresponding position. position of the card slot.

In this way, when the walker is used as a sitting type of transportation, the first seat assembly and the second seat assembly are respectively allowed to rotate at the positions connected to the frame body until the first seat assembly and the second seat assembly rotate to the horizontal position, and then move the first seat assembly or the second seat assembly axially along the frame body until the buckle on the first seat assembly fully extends into the slot of the second seat assembly. At this time, the connection between the first seat board assembly and the second seat board assembly is realized by using the snap-in effect between the buckle and the card slot, and people can sit on the seat board mechanism to realize the purpose of sitting for transportation.

When the walker is used as a standing booster or a climbing ladder without using the seat mechanism, move the first seat assembly or the second seat assembly in the opposite direction so that the buckle on the first seat assembly is released from the second seat assembly. The card slot on the board assembly is completely withdrawn. At this time, there is no connection relationship between the first seat board assembly and the second seat board assembly. Under the action of gravity, the first seat board assembly and the second seat board assembly will respectively Rotate downwards around the respective positions connected with the frame body to the position in the vertical state, thereby realizing the disassembly between the first seat board assembly and the second seat board assembly.

Therefore, this solution utilizes the cooperation between the buckle and the slot to conveniently realize the installation and disassembly of the first seat assembly and the second seat assembly.

Preferably, the driven wheel assembly includes a thigh rod, a calf rod and a driven wheel set, the upper end of the thigh rod is hinged to the frame at the corresponding position, the lower end of the thigh rod is hinged to the upper end of the calf rod, The lower end of the calf rod is rotatably connected to the driven wheel set, and a gas spring is also connected between the thigh rod and the calf rod, so that a setting is formed between the thigh rod and the calf rod. Angle and cushion the vibration during exercise.

In this way, the cooperation between the rotating pair formed between the parts of the driven wheel assembly and the gas spring not only improves the stability of the overall structure of the driven wheel assembly, but also improves the flexibility of the driven wheel assembly. It can also cushion the vibration during exercise, thereby improving the comfort of the walker.

Preferably, the driven wheel set includes an installation shaft arranged in the axial direction, and driven wheel brackets are respectively provided on both axial sides of the installation shaft, and the driven wheel bracket has a three-lobed structure uniformly distributed along the circumferential direction as a whole, In addition, a driven wheel is rotatably connected to each blade of the trilobate structure of the driven wheel support, and there is a gap between two adjacent driven wheels for climbing steps, and the arc angle corresponding to the gap is 60° .

In this way, the driven wheel set is also designed as a three-blade mechanism similar in structure to the driving wheel assembly, and the driven wheel set can assist the movement of the driving wheel assembly when climbing the ladder, making ladder climbing faster and more convenient.

Preferably, the multifunctional walking aid for the elderly further includes two sets of self-balancing mechanisms distributed axially along the frame body, and the self-balancing mechanisms include guide rails with a U-shaped structure with the opening upwards as a whole. In the vertical direction of the guide rails, There are guide grooves on both sides of the guide rail, and two sets of triangular pulley mechanisms are arranged at intervals along the axial direction on the guide rail. The upper apex of the triangular structure of the pulley bracket is fixedly connected to the frame body at the corresponding position, and the two lower apexes of the triangular structure of the triangular pulley bracket are fixedly connected with a vertically arranged connecting frame, and the connecting frame is vertically connected. The two ends of the direction are connected to the balance pulley through the connecting shaft, and the balance pulley is slidably connected in the guide groove at the corresponding position; the end of the guide rail close to the driving wheel assembly passes through the first bracket and the corresponding position. The driving wheel assembly is connected, and one end of the guide rail close to the driven wheel assembly is connected to the driven wheel assembly at a corresponding position through a second bracket.

In this way, by setting the self-balancing mechanism, when the walker moves to a sloped road, since the direction of the center of gravity of the person remains unchanged, the gravity acts on the frame, and under the pressure or gravity of the person's support, the triangular pulley mechanism The balance pulley in the guide rail will slide back and forth along the guide groove on the guide rail to drive the whole frame to keep level, so that the human body is always kept level. Keep the human body movement level and feel comfortable. It can compensate the slope up to more than 30 degrees, and realize a relatively gentle self-balancing of the horizontal plane.

Preferably, an underarm support armrest is also detachably connected to the frame body, the underarm support armrest is installed on the side of the frame body close to the driving wheel mechanism, and the underarm support armrest includes a connection part and a supporting part, the connecting part is used to connect with the frame body, and the supporting part can adapt to the position of the armpit of the human body to provide assistance to the human body.

In this way, by setting the underarm support armrest, when it is used as a standing walking aid or a standing ladder, the underarm support armrest is rotated so that the connecting part of the underarm support armrest is facing the armpit position when the human body is standing, and then the armpit of the human body The lower position is supported on the connecting part, thereby realizing the assisting effect on the human body during standing walking or climbing stairs; when the walking aid is used as a sitting walking aid mode, turn the armrests under the armpit so that the device is connected At this time, other people can push the walker forward through the connection part of the armrest supporting the armrest. Thus, by changing the direction of the underarm support armrest, the mode switching between the user's assisting assistance and other people's pushing the walker can be realized.

A method for using a multifunctional walker for the elderly, using the above-mentioned multifunctional walker for the elderly, including a method for walking on a flat road or/and a method for climbing a ladder:

Among them, the method of walking on flat roads is:

Step 1) The controller controls the driving motor to rotate in reverse, the driving motor rotates in reverse and then drives the first shaft to rotate in reverse, and the first shaft rotates in reverse to drive the first three-impeller Rotate to a position where the overall shape of the second three-impeller is circular;

Step 2) The driver controls the drive motor to rotate in the forward direction, and the drive motor drives the first rotating shaft to rotate in the forward direction, and the first rotating shaft drives the The second rotating shaft rotates synchronously, so that the first three-blade wheel and the second three-blade wheel rotate synchronously to realize walking on flat roads.

The method of using the ladder is as follows:

Step 1) Take the direction of the driving wheel mechanism as the front of the multifunctional elderly walker;

Step 2) The controller controls the driving motor to rotate in reverse, the driving motor rotates in reverse and then drives the first shaft to rotate in reverse, and the first shaft rotates in reverse to drive the first three-impeller Rotate to a position completely overlapping with the second three impellers;

Step 3) The controller controls the driving motor to rotate forward, the driving motor drives the first rotating shaft to rotate forward, and the first rotating shaft drives the second rotating shaft under the action of the one-way power transmission mechanism. The rotating shaft rotates synchronously, so that the first three-impeller and the second three-impeller rotate forward synchronously, and when the first three-impeller and the second three-impeller rotate forward, the first three-impeller and the second three-impeller The gap between the two adjacent blades of the second three-impeller catches the stairs or steps at the corresponding positions, and the blades at the corresponding positions on the first three-impeller and the second three-impeller will abut against the stairs or steps The upper surface of the first three-blade wheel and the second three-blade wheel continue to rotate forward, and the blades of the first three-blade wheel and the second three-blade wheel that are in contact with the steps or stairs rotate forward and drive the entire The multi-functional elderly walker lifts and moves forward to complete the crossing of single steps or stairs;

Step 4) Repeat step 3) until all steps or stairs are crossed.

Compared with the walking aids in the prior art, the walking aid of the present invention has the following advantages:

1. The walking aid of the present invention has multiple working modes:

When the walker is in the form of a standing walker, the seat mechanism is removed, the user stands in the frame of the walker, and the armpit is placed on the underarm support armrest, which can support most of the weight of the body. When walking on a flat road, the old man pushes the walker to walk forward step by step. The walker supports most of the weight of the body, reduces the pressure on the legs, and protects the old man in a 270° range to prevent falls.

When the walker is in the form of sitting, install the seat plate mechanism, and the two three-impellers will restore the full-circle contour shape. Rotate the underarm support armrest 180° and then tighten it so that its connection part turns to the back. At this time, the walking aid The walker is an ordinary wheelchair, the user sits on it, and someone can help push the walker to move.

When the walker is in the form of a climbing ladder, use the standing walker to assist in climbing stairs, remove the seat mechanism, the elderly stand in the walker frame, put the armpits on the armrests, and the controller controls the drive motor to run , so that the two three-blade wheels rotate relative to each other to a completely overlapping position. At this time, the entire driven wheel is a three-blade wheel profile, which cooperates with the movement of the driving wheel assembly to assist the elderly to go upstairs.

2. The present invention realizes mutual conversion between stair-climbing motion and flat pavement motion by switching the states of the two three-impellers, which is convenient and reliable.

3. The self-balancing mechanism of the present invention can adapt to harsh road surfaces, and has high safety and comfortable body feeling.

4. The present invention is designed according to ergonomics. On the premise of ensuring comfort, it can make people's walking more labor-saving, so as to help the elderly with handicapped mobility to travel.

5. The seat mechanism of the present invention adopts the snap-rivet seat plate connected by snap-rivets, which is convenient and ingenious to disassemble.

Description of drawings

Fig. 1 is a structural schematic diagram of the multifunctional elderly walker of the present invention when it is used for sitting instead of walking;

Fig. 2 is a side view of the multifunctional elderly walker of the present invention when it is used for sitting instead of walking;

Fig. 3 is a schematic structural view of the multifunctional elderly walker of the present invention when it is used for standing walking;

Fig. 4 is a schematic diagram of the installation structure of the driving wheel mechanism on the frame in the multifunctional elderly walker of the present invention;

Fig. 5 is a structural schematic diagram of the driven wheel assembly in the multifunctional elderly walker of the present invention;

Fig. 6 is the enlarged schematic view of place A in Fig. 5;

Fig. 7 is a schematic diagram of the state of the two three-impellers of the multifunctional elderly walker of the present invention when climbing a ladder;

Fig. 8 is a schematic structural view of the driven wheel mechanism in the multifunctional elderly walker of the present invention;

Fig. 9 is a structural schematic diagram of the self-balancing mechanism in the multifunctional walking aid for the elderly of the present invention;

Fig. 10 is a schematic structural view of the triangular pulley mechanism in the multifunctional walking aid for the elderly of the present invention;

Fig. 11 is a schematic structural view of the second seat board assembly in the multifunctional elderly walker of the present invention;

Fig. 12 is a schematic structural view of the first seat board assembly in the multifunctional elderly walking aid of the present invention.

Explanation of reference numerals: frame body 1, underarm support armrest 2, driving wheel mechanism 3, controller 301, first three-impeller 302, second three-impeller 303, first rotating shaft 304, second rotating shaft 305, driving gear 306, Reducer 307, driven gear 308, ratchet 309, connection plate 310, pawl 311, driven wheel mechanism 4, thigh rod 401, gas spring 402, calf rod 403, driven wheel bracket 404, driven wheel 405, self-balancing mechanism 5 , guide rail 501, guide groove 502, triangular pulley bracket 503, balance pulley 504, seat mechanism 6, second seat assembly 601, slot 602, first seat assembly 603, buckle 604, mounting seat 7.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in accompanying drawings 1 to 6, a multifunctional walking aid for the elderly includes a frame body 1 and a walking ladder mechanism installed on the frame body 1;

The walking ladder mechanism includes a controller 301, and a driving wheel mechanism 3 and a driven wheel mechanism 4 radially distributed along the frame body 1. The driven wheel mechanism 4 includes two driven wheel assemblies distributed axially along the frame body 1. The driving wheel mechanism 3 It includes two driving wheel assemblies axially distributed along the frame body 1. The driving wheel assembly includes a drive motor, a first three-blade wheel 302 and a second three-blade wheel 303 that is consistent with the first three-blade wheel 302 in dimensions. The first three-blade wheel 302 There is a gap between two adjacent blades for climbing steps, and the first three-blade wheel 302 and the second three-blade wheel 303 can be rotated relative to each other to a position where they are completely overlapped or offset from each other to form a full circle contour. The first three-blade wheel 302 is sleeved On the first rotating shaft 304, the second three-impeller 303 is sleeved on the second rotating shaft 305, and the first rotating shaft 304 and the second rotating shaft 305 are coaxially arranged so that the first three-impeller 302 and the second three-impeller 303 have the same The center of rotation; the drive motor is electrically connected to the controller 301, so that the controller 301 can control the rotation of the drive motor, and the drive motor is connected to the first rotating shaft 304 through a deceleration and torque-increasing gear transmission mechanism, so that the power of the drive motor passes through the deceleration The deceleration and torque increase of the torque-increasing gear transmission mechanism is transmitted to the first rotating shaft 304, and the first rotating shaft 304 and the second rotating shaft 305 are connected through a one-way power transmission mechanism, so that the driving motor drives the first rotating shaft 304 to rotate in the forward direction It can synchronously drive the second rotating shaft 305 to rotate, and the drive motor cannot synchronously drive the second rotating shaft 305 to rotate when the driving motor drives the first rotating shaft 304 to rotate in the reverse direction. In this solution, the arc angle corresponding to the distance between two adjacent blades of the first three-blade wheel 302 and the second three-blade wheel 303 is 60°.

In this scheme, define the direction that is horizontal and perpendicular to the travel of the walker as the axial direction, and the direction that is vertical and perpendicular to the travel of the walker as the vertical direction.

The working principle of the present invention is: when performing operations such as climbing stairs and steps, the direction where the driving wheel mechanism 3 is located is taken as the front of the walker at this time, and the hand is held on the frame body 1. When in use, the controller 301 first Control the drive motor to rotate in reverse, so that the drive motor drives the first rotating shaft 304 to rotate in the opposite direction. At this time, the second rotating shaft 305 will not follow the rotation of the first rotating shaft 304. The impeller 302 rotates so that the first three-blade wheel 302 rotates from a position where it is in a circular profile state with the second three-blade wheel 303 to a position that completely overlaps with the second three-blade wheel 303. Structural form; when climbing stairs or steps, the controller 301 controls the drive motor to rotate in the forward direction, so that the drive motor drives the first rotating shaft 304 to rotate in the forward direction. At this time, the first rotating shaft 304 will synchronously drive the second rotating shaft 305 to rotate, that is At this time, the first three-blade wheel 302 and the second three-blade wheel 303 will also rotate forward synchronously. The gap between the adjacent two blades is stuck to the stairs or steps at the corresponding positions, and the blades at the corresponding positions on the first three-blade wheel 302 and the second three-blade wheel 303 will abut against the upper surface of the stairs or steps (as shown in Figure 7 shown), at this time the first three-blade wheel 302 and the second three-blade wheel 303 continue to rotate forward, and the blades of the two three-blade wheels abutting against the steps or stairs rotate forward and drive the entire walker to lift and move forward, by This completes the spanning of single-level steps or stairs. When multi-level steps or stairs need to be crossed, the gap between the two blades on the other position of the two three-impellers is stuck to the next level of stairs or steps. The leaping of the next level of steps or stairs, reciprocating like this can complete the spanning of multi-level steps and stairs.

When it is necessary to walk on a flat road after completing the stairs or steps, the controller 301 controls the drive motor to rotate in reverse, and the drive motor rotates in reverse to drive the first shaft 304 to rotate in reverse, and the first shaft 304 to rotate in reverse to drive the second The first three-blade wheel 302 rotates from the position completely overlapping with the second three-blade wheel 303 to the position where the second three-blade wheel 303 is in a circular shape as a whole. running on the road.

Therefore, the multi-functional walking aid of this program uses the gap between each of the three impellers in the two three-impellers to block the steps or stairs when climbing stairs or steps through the change of the position state between the two three-impellers. , so as to achieve the purpose of climbing stairs or steps. At the same time, when running on flat roads, the two three-impellers rotate relative to each other to form an overall circular shape, so as to ensure normal operation on flat roads. Therefore, this scheme is It can assist the elderly to climb stairs or steps, and can also ensure normal operation on flat roads, so as to better meet the travel needs of the elderly.

In this embodiment, the deceleration and torque increasing gear transmission mechanism includes a speed reducer 307, a driving gear 306 and a driven gear 308. The input shaft of the speed reducer 307 is connected to the rotating shaft of the drive motor, and the output shaft of the speed reducer 307 is connected to the driving gear 306. , the driven gear 308 is connected to the first rotating shaft 304, and the driving gear 306 and the driven gear 308 are always in meshing state.

Like this, the running speed of the multifunctional elderly walker is often slower when in use, and when a person sits on the walker or is supported on the walker at the same time, the weight of the walker as a whole is relatively large, requiring a larger Torque is used to ensure the operation of the walker. Therefore, this program uses a speed reducer 307, a driving gear 306 and a driven gear 308 to reduce and increase the output power of the drive motor by setting a deceleration and torque increasing gear mechanism, so as to meet the needs of the walking aid. The requirements of the traveler on the driving speed and applied torque.

In this embodiment, the one-way power transmission mechanism includes a ratchet 309 and a pawl 311. The ratchet 309 is connected to the first rotating shaft 304, and the outer circumference of the ratchet 309 is provided with a number of one-way helical teeth. A connecting plate 310 is provided near the ratchet 309, and the pawl 311 is hinged on the connecting plate 310, and the pawl 311 can extend into the tooth groove of the one-way helical tooth of the ratchet 309 at the corresponding position, and when the ratchet 309 rotates forward Clamped in the tooth groove of the one-way helical tooth, and slide on the tooth back of the one-way helical tooth when the ratchet wheel 309 rotates in reverse.

In this way, in this solution, by setting a one-way power transmission mechanism, the first rotating shaft 304 only drives the second rotating shaft 305 to rotate synchronously when rotating in the forward direction, and the first rotating shaft 304 does not drive the second rotating shaft 305 to rotate synchronously when rotating in the reverse direction. The first rotating shaft 304 can drive the first three-blade wheel 302 to rotate to a position where it coincides with or is misaligned with the second three-blade wheel 303 to form a circular contour, so as to meet the dual requirements of climbing stairs and walking on flat roads. In this solution, in order to realize one-way transmission of power, a ratchet 309 is provided on the first rotating shaft 304, and a ratchet 311 is hinged on the second rotating shaft 305 through a connecting plate 310. When the first rotating shaft 304 rotates forward, the ratchet The pawl 311 is clamped in the tooth groove of the one-way helical tooth of the ratchet 309, so that the second rotating shaft 305 rotates synchronously with the first rotating shaft 304, and when the first rotating shaft 304 rotates in the opposite direction, the ratchet 311 is used to rotate in the one-way oblique The tooth backs of the teeth slide, so that the second rotating shaft 305 does not rotate synchronously with the first rotating shaft 304 , thereby realizing the one-way power transmission of the first rotating shaft 304 .

In this embodiment, a mounting seat 7 is provided on the frame body 1, the driving motor is mounted on the mounting seat 7, a mounting hole is opened on the first rotating shaft 304 along its axial direction, and the second rotating shaft 305 is far away from it to connect the second and third One end of the impeller 303 protrudes into the mounting hole, and the first rotating shaft 304 protrudes into the mounting base 7 and is rotationally connected with the mounting base 7 through a bearing.

In this way, by providing the mounting seat 7 , the driving motor is installed by using the mounting seat 7 , and at the same time, the first rotating shaft 304 is supported on the mounting seat 7 through the bearing.

As shown in accompanying drawing 8, in the present embodiment, driven wheel assembly comprises thigh bar 401, calf bar 403 and driven wheel set, and the upper end of thigh bar 401 is hinged with the support body 1 of corresponding position, and the lower end of thigh bar 401 and calf The upper end of the rod 403 is hinged, the lower end of the calf rod 403 is rotationally connected with the driven wheel set, and a gas spring 402 is also connected between the thigh rod 401 and the calf rod 403, so that a setting is formed between the thigh rod 401 and the calf rod 403. Angle and cushion the vibration during exercise.

In this way, the cooperation between the rotating pair formed between the parts of the driven wheel assembly and the gas spring 402 not only improves the stability of the overall structure of the driven wheel assembly, but also improves the flexibility of the driven wheel assembly. The gas spring 402 is used in walking aids. During the process, the vibration during the exercise can also be cushioned, thereby improving the comfort of the walker.

In this embodiment, the driven wheel set includes an installation shaft arranged in the axial direction, and driven wheel brackets 404 are respectively provided on both axial sides of the installation shaft. A driven wheel 405 is rotatably connected to each blade of the trilobate structure of the driven wheel bracket 404, and there is a gap between two adjacent driven wheels 405 for climbing steps, and the arc angle corresponding to the gap is 60° .

In this way, the driven wheel set is also designed as a three-blade mechanism similar in structure to the driving wheel assembly, and the driven wheel set can assist the movement of the driving wheel assembly when climbing the ladder, making ladder climbing faster and more convenient.

As shown in accompanying drawings 9 and 10, in this embodiment, the multifunctional walking aid for the elderly also includes two sets of self-balancing mechanisms 5 distributed axially along the frame body 1, and the self-balancing mechanisms 5 include an overall opening upward. The guide rail 501 of U-shaped structure is provided with guide grooves 502 on both sides of the vertical direction of the guide rail 501, and two sets of triangular pulley mechanisms are distributed along the axial interval on the guide rail 501. The triangular pulley mechanisms include a triangular pulley bracket 503, a triangular pulley The bracket 503 has a triangular structure as a whole, and the upper apex of the triangular structure of the triangular pulley bracket 503 is fixedly connected with the frame body 1 at the corresponding position, and the two lower apexes of the triangular structure of the triangular pulley bracket 503 are fixedly connected with a vertical connecting frame , both ends in the vertical direction of the connecting frame are connected with a balance pulley 504 through the connecting shaft, and the balance pulley 504 is slidably connected in the guide groove 502 at the corresponding position; the end of the guide rail 501 close to the drive wheel assembly passes through the first bracket and the corresponding position The driving wheel assembly is connected, and the end of the guide rail 501 close to the driven wheel assembly is connected to the corresponding driven wheel assembly through the second bracket.

In this way, by setting the self-balancing mechanism 5, when the walker moves to a sloped road, since the direction of the center of gravity of the person remains unchanged, gravity acts on the frame body 1, and under the pressure or gravity of the person's support, the triangular shape The balance pulley 504 in the pulley mechanism will slide back and forth along the guide groove 502 on the guide rail 501 to drive the frame body 1 to maintain the overall level, so that the human body is always kept level. Whether it is sitting or sitting, it keeps the human body movement level and feels comfortable. It can compensate for slopes of more than 30 degrees and achieve a relatively gentle self-balancing of the horizontal plane.

In this embodiment, an underarm support armrest 2 can also be detachably connected to the frame body 1, and the underarm support armrest 2 is installed on the side of the frame body 1 close to the driving wheel mechanism 3, and the underarm support armrest 2 includes a connecting portion And the supporting part, the connecting part is used to connect with the frame body 1, and the supporting part can adapt to the position of the armpit of the human body to provide assistance for the human body.

In this way, by setting the underarm support armrest 2, when it is used as a standing walking aid or a standing ladder, the underarm support armrest 2 is rotated so that the connecting portion of the underarm support armrest 2 faces the armpit position when the human body stands and uses, and then The armpit position of the human body is supported on the connecting part, thereby realizing the assisting effect on the human body during standing walking or climbing stairs; when the walking aid is used as a sitting walking aid mode, turn the armrest 2 , so that the connecting portion of the walker is facing the opposite side of the advancing direction of the walker, at this time, others can push the walker forward through the connecting portion of the underarm support armrest 2 . Thus, by changing the direction of the armrest 2 under the armpit, it is possible to switch modes between the user assisting the user and others pushing the walker.

As shown in Figure 11 and Figure 12, in this embodiment, the seat board mechanism 6 includes two seat board assemblies axially distributed along the frame body 1, and the two seat board assemblies are rotatably connected to the frame body 1 at the corresponding position Above, the ends of the two seat board components far away from the connecting frame body 1 can be connected to each other to form a sitting board for the human body to sit on, and the ends of the two seat board components far away from the connecting frame body 1 can be separated from each other to allow the human body to walk when standing room.

The walker of this program has multiple ways of use. When used as a seated wheelchair, the two seat assemblies in the seat mechanism 6 are connected to form a seat for the human body to sit and stand. At this time, the user You can sit on the seat board, the first three-impeller 302 and the second three-impeller 303 have a circular shape as a whole, at this time, the controller 301 controls the drive motor to rotate in the forward direction, and the drive motor rotates in the forward direction to drive the first rotating shaft 304 rotates in the forward direction. At this time, under the action of the one-way power transmission mechanism, the first rotating shaft 304 will drive the second rotating shaft 305 to rotate synchronously, that is, the first three-impeller 302 and the second three-impeller 303 will rotate synchronously at this time, thus Push the walker forward to achieve the effect of sitting.

When used as a standing walking aid function, the two seat board components in the board board mechanism 6 are separated to allow the standing space for the human body to walk, and the people's hands are held on the frame body 1, and the first three impellers 302 and the second three The impeller 303 has a circular outline as a whole. At this time, the controller 301 controls the drive motor to rotate forward, and the drive motor rotates forward to drive the first rotating shaft 304 to rotate forward. At this time, under the action of the one-way power transmission mechanism , the first rotating shaft 304 will drive the second rotating shaft 305 to rotate synchronously, that is, the first three-blade wheel 302 and the second three-blade wheel 303 will rotate synchronously at this time, thereby pushing the walker forward and realizing the effect of standing walking aid.

In this embodiment, the seat mechanism 6 includes a first seat assembly 603 and a second seat assembly 601 axially distributed along the frame body 1, and the first seat assembly 603 and the second seat assembly 601 are movably connected to on the frame body 1 at the corresponding position, so that both the first seat board assembly 603 and the second seat board assembly 601 can rotate on the frame body 1 and slide along the axial direction of the frame body 1, away from the first seat board assembly 603 A plurality of buckles 604 are arranged at intervals along the traveling direction of the walker on one side of the connecting frame body 1 , and a plurality of buckles 604 are arranged at intervals along the traveling direction of the walking aid on the side of the second seat plate assembly 601 away from the connecting frame body 1 There are a plurality of connecting blocks, the connecting blocks correspond to the buckles 604 one by one, and a slot 602 suitable for the outer dimension of the buckle 604 is opened on the connecting block, so that the buckle 604 can extend into the slot 602 at the corresponding position Inside, the axial distance between two adjacent connecting blocks is greater than the axial width of the buckle 604, so that the buckle 604 can completely withdraw from the slot 602 at the corresponding position.

In this way, when the walker is used as a sitting type of transportation, the first seat assembly 603 and the second seat assembly 601 are respectively rotated at positions connected to the frame body 1 until the first seat assembly 603 and the second The seat assembly 601 is rotated to the horizontal position, and then the first seat assembly 603 or the second seat assembly 601 is moved axially along the frame body 1 until the buckle 604 on the first seat assembly 603 is fully inserted into the second seat assembly. In the slot 602 of the second seat assembly 601, at this time, the connection between the first seat assembly 603 and the second seat assembly 601 is realized by using the snap-in effect between the buckle 604 and the slot 602, so that people can sit On this seat board mechanism 6, realize the purpose that sitting type walks instead of using.

When the walker does not need to use the seat mechanism 6 as a standing power-assisted or climbing ladder, move the first seat assembly 603 or the second seat assembly 601 in the opposite direction so that the buckle on the first seat assembly 603 604 completely withdraws from the draw-in groove 602 on the second seat assembly 601. At this moment, there is no connection relationship between the first seat assembly 603 and the second seat assembly 601. Under the action of gravity, the first seat assembly The assembly 603 and the second seat assembly 601 will respectively rotate downwards to the vertical position around the respective positions connected to the frame body 1, thus realizing the connection between the first seat assembly 603 and the second seat assembly 601. disassembly.

Therefore, this solution utilizes the cooperation between the buckle 604 and the slot 602 to conveniently realize the installation and disassembly of the first seat assembly 603 and the second seat assembly 601 .

A method for using a multifunctional walker for the elderly, using the above-mentioned multifunctional walker for the elderly, including a method for walking on a flat road or/and a method for climbing a ladder:

Among them, the method of walking on flat roads is:

Step 1) The controller 301 controls the driving motor to rotate in the reverse direction, the driving motor rotates in the reverse direction and then drives the first rotating shaft 304 to rotate in the reverse direction, and the first rotating shaft 304 rotates in the reverse direction and then drives the first three-impeller 302 to rotate to the second three-impeller 303 The position of the overall circular outline state;

Step 2) The driver controls the drive motor to rotate in the forward direction, and the drive motor drives the first rotating shaft 304 to rotate in the forward direction. The first rotating shaft 304 drives the second rotating shaft 305 to rotate synchronously under the action of the one-way power transmission mechanism, so that the first The three-blade wheel 302 and the second three-blade wheel 303 rotate synchronously to realize walking on flat roads.

The method of using the ladder is as follows:

Step 1) Take the direction of the driving wheel mechanism 3 as the front of the multifunctional elderly walker;

Step 2) The controller 301 controls the drive motor to rotate in reverse, the drive motor rotates in reverse and then drives the first rotating shaft 304 to rotate in reverse, and the first rotating shaft 304 rotates in reverse to drive the first three-impeller 302 to rotate to the second three-impeller 303 completely coincident position;

Step 3) The controller 301 controls the drive motor to rotate forward, the drive motor drives the first rotating shaft 304 to rotate forward, and the first rotating shaft 304 drives the second rotating shaft 305 to rotate synchronously under the action of the one-way power transmission mechanism, so that the first three-impeller 302 and the second three-blade wheel 303 rotate forward synchronously, and when the first three-blade wheel 302 and the second three-blade wheel 303 rotate forward, the gap between the adjacent two blades of the first three-blade wheel 302 and the second three-blade wheel 303 is locked. Stairs or steps at the corresponding positions, and the blades at the corresponding positions on the first three-blade wheel 302 and the second three-blade wheel 303 will abut against the upper surface of the stairs or steps, and the first three-blade wheel 302 and the second three-blade wheel 303 continue to move forward Rotate, the blades of the first three-blade wheel 302 and the second three-blade wheel 303 that abut against the steps or stairs rotate forward and drive the entire multifunctional elderly walker to lift and move forward, completing the spanning of single steps or stairs;

Step 4) Repeat step 3) until all steps or stairs are crossed.

Compared with the walking aids in the prior art, the walking aid of the present invention has the following advantages:

1. The walking aid of the present invention has multiple working modes:

When the walker is in the form of a standing walker, the seat board mechanism 6 is removed, the user stands in the walker frame, and the armpit is placed on the armrest 2 above the armpit, and the armrest 2 can support the body Part of the weight, when walking on a flat road, the old man pushes the walker to walk forward. The walker supports most of the body weight, reduces the pressure on the legs, and protects the old man in a 270° range to prevent falls.

When the walker is in the form of sitting, the seat plate mechanism 6 is installed, and the two three-impellers recover the full-circle contour shape, and the underarm support armrest 2 is rotated 180° and then tightened so that the connecting part is turned to the back. The walker is an ordinary wheelchair, the user sits on it, and someone can help push the walker to move.

When the walker is in the form of a climbing ladder, use the standing walker to assist in climbing stairs, remove the seat plate mechanism 6, the old man stands in the walker frame, and the armpit is placed on the armrest 2 under the armpit, controlled by the controller 301 The drive motor runs so that the two three-blade wheels rotate relative to each other to a position where they overlap completely. At this time, the entire driven wheel is a three-blade wheel profile, which cooperates with the movement of the driving wheel assembly to assist the elderly to go upstairs.

2. The present invention realizes mutual conversion between stair-climbing motion and flat pavement motion by switching the states of the two three-impellers, which is convenient and reliable.

3. The self-balancing mechanism 5 of the present invention can adapt to bad road surfaces, has high safety and comfortable body feeling.

4. The present invention is designed according to ergonomics. On the premise of ensuring comfort, it can make people's walking more labor-saving, so as to help the elderly with handicapped mobility to travel.

5. The seat board mechanism 6 of the present invention adopts a snap-rivet seat board connected by snap-rivets, which is convenient and ingenious to disassemble.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than limit the technical solutions. Those skilled in the art should understand that those who modify or replace the technical solutions of the present invention without departing from the present technology The purpose and scope of the scheme should be included in the scope of the claims of the present invention.

Claims (9)

1. A multifunctional walking aid for the aged is characterized by comprising a frame body and a walking ladder climbing mechanism arranged on the frame body;

the walking ladder stand mechanism comprises a controller, a driving wheel mechanism and a driven wheel mechanism, wherein the driving wheel mechanism and the driven wheel mechanism are distributed along the radial direction of the frame body, the driven wheel mechanism comprises two driven wheel assemblies distributed along the axial direction of the frame body, the driving wheel mechanism comprises two driving wheel assemblies distributed along the axial direction of the frame body, each driving wheel assembly comprises a driving motor, a first three-impeller and a second three-impeller, the external dimensions of the second three-impeller are consistent with those of the first three-impeller, a gap for climbing a step is formed between every two adjacent blades of the first three-impeller, the first three-impeller and the second three-impeller can relatively rotate to a position which is completely overlapped or mutually staggered to form a whole circular outline, the first three-impeller is sleeved on a first rotating shaft, the second three-impeller is sleeved on a second rotating shaft, and the first rotating shaft and the second rotating shaft are coaxially arranged, so that the first three-impeller and the second three-impeller have the same rotating center; the driving motor is electrically connected with the controller, so that the controller can control the rotation of the driving motor, the driving motor is connected with the first rotating shaft through a speed reduction and torque increase gear transmission mechanism, so that the power of the driving motor is transmitted to the first rotating shaft after being reduced and torque increased through the speed reduction and torque increase gear transmission mechanism, the first rotating shaft and the second rotating shaft are connected through a one-way power transmission mechanism, so that the driving motor drives the first rotating shaft to synchronously drive the second rotating shaft to rotate when rotating in the forward direction, and the driving motor drives the first rotating shaft to synchronously drive the second rotating shaft to rotate when rotating in the reverse direction;

the multifunctional walking aid for the aged also comprises two groups of self-balancing mechanisms which are axially distributed along the frame body, each self-balancing mechanism comprises a guide rail which is integrally in a U-shaped structure with an upward opening, guide grooves are formed in two sides of the guide rail in the vertical direction, two groups of triangular pulley mechanisms are axially distributed on the guide rail at intervals, each triangular pulley mechanism comprises a triangular pulley support, each triangular pulley support is integrally in a triangular structure, the upper vertex of each triangular pulley support triangular structure is fixedly connected with the frame body at a corresponding position, two lower vertices of each triangular pulley support triangular structure are fixedly connected with a vertically arranged connecting frame, two ends of each connecting frame in the vertical direction are rotatably connected with balancing pulleys through connecting shafts, and the balancing pulleys are slidably connected in the guide grooves at corresponding positions; one end of the guide rail, which is close to the driving wheel assembly, is connected with the driving wheel assembly at the corresponding position through a first support, and one end of the guide rail, which is close to the driven wheel assembly, is connected with the driven wheel assembly at the corresponding position through a second support.

2. The multifunctional walking aid for the aged as claimed in claim 1, wherein the gear transmission mechanism comprises a speed reducer, a driving gear and a driven gear, an input shaft of the speed reducer is connected with a rotating shaft of the driving motor, an output shaft of the speed reducer is connected with the driving gear, the driven gear is connected with the first rotating shaft, and the driving gear and the driven gear are always engaged.

3. The multifunctional walking aid for the aged according to claim 1, wherein the unidirectional power transmission mechanism comprises a ratchet wheel and a pawl, the ratchet wheel is connected to the first rotating shaft, a plurality of unidirectional oblique teeth are arranged on the outer circumference of the ratchet wheel, a connecting disc is arranged on the second rotating shaft and close to the ratchet wheel, the pawl is hinged to the connecting disc, the pawl can extend into tooth grooves of the unidirectional oblique teeth of the ratchet wheel at corresponding positions, is clamped in the tooth grooves of the unidirectional oblique teeth when the ratchet wheel rotates in the forward direction, and slides on tooth backs of the unidirectional oblique teeth when the ratchet wheel rotates in the reverse direction.

4. The multifunctional walking aid for the aged according to claim 1, wherein a mounting seat is provided on the frame body, the driving motor is mounted on the mounting seat, a mounting hole is provided on the first rotating shaft along the axial direction thereof, one end of the second rotating shaft, which is far away from the end connected with the second three-blade wheel, extends into the mounting hole, and the first rotating shaft extends into the mounting seat and is rotatably connected with the mounting seat through a bearing.

5. The multifunctional walking aid for the aged according to claim 1, wherein the frame body is further provided with a seat mechanism, the seat mechanism comprises two seat components axially distributed along the frame body, the two seat components are movably connected to the frame body at corresponding positions, one ends of the two seat components, which are far away from the frame body and connected to the frame body, can be connected to each other to form a seat for the human body to sit on, and one ends of the two seat components, which are far away from the frame body and connected to the frame body, can be separated from each other to make room for the human body to stand when walking.

6. The multifunctional mobility aid for the aged according to claim 5, wherein the seat mechanism comprises a first seat component and a second seat component distributed along the axial direction of the frame body, the first seat component and the second seat component are movably connected to the frame body at corresponding positions so that the first seat component and the second seat component can rotate on the frame body and slide along the axial direction of the frame body, a plurality of buckles are arranged on the first seat component at intervals along the advancing direction of the mobility aid at the side far away from the side connected with the frame body, a plurality of connecting blocks are arranged on the second seat component at intervals along the advancing direction of the mobility aid at the side far away from the side connected with the frame body, the connecting blocks correspond to the buckles in a one-to-one manner, clamping grooves corresponding to the overall dimensions of the buckles are formed on the connecting blocks so that the buckles can extend into the clamping grooves at corresponding positions, and the axial distance between two adjacent connecting blocks is greater than the axial width of the buckles so that the buckles can completely exit from the clamping grooves at corresponding positions.

7. The multifunctional walking aid for the aged as claimed in claim 1, wherein the driven wheel assembly comprises a thigh rod, a lower leg rod and a driven wheel set, the upper end of the thigh rod is hinged with the frame body at a corresponding position, the lower end of the thigh rod is hinged with the upper end of the lower leg rod, the lower end of the lower leg rod is rotatably connected with the driven wheel set, and an air spring is further connected between the thigh rod and the lower leg rod, so that a set angle is formed between the thigh rod and the lower leg rod and vibration during movement is buffered;

driven wheelset includes the installation axle that sets up along the axial both sides of installation axle are equipped with respectively from the driving wheel support, from the whole trilobal structure that is along the circumference equipartition of driving wheel support, just all rotate on every blade of driving wheel support trilobal structure and be connected with from the driving wheel, adjacent two have the clearance that is used for climbing the step from between the driving wheel, and the circular arc angle that this clearance corresponds is 60.

8. The multifunctional walking aid for the aged as claimed in claim 1, wherein an armpit supporting handrail is detachably connected to the frame body, the armpit supporting handrail is installed at one side of the frame body close to the driving wheel mechanism, and the armpit supporting handrail comprises a connecting portion and a supporting portion, the connecting portion is used for being connected with the frame body, and the supporting portion can be adapted to the armpit position of the human body to provide assistance to the human body.

9. The use method of the multifunctional walking aid for the aged is characterized in that the multifunctional walking aid for the aged as claimed in claim 1 is adopted, and comprises a flat road walking use method and/or a ladder climbing use method:

the method for using the flat road walking comprises the following steps:

step 1) the controller controls the driving motor to rotate reversely, the driving motor rotates reversely to drive the first rotating shaft to rotate reversely, and the first rotating shaft rotates reversely to drive the first three-impeller to rotate to a position where the first three-impeller and the second three-impeller are integrally in a circular outline state;

step 2) the controller controls the driving motor to rotate in the forward direction, the driving motor rotates in the forward direction and then drives the first rotating shaft to rotate in the forward direction, and the first rotating shaft drives the second rotating shaft to rotate synchronously under the action of the one-way power transmission mechanism, so that the first three-impeller and the second three-impeller rotate synchronously, and walking on a flat road is realized;

the ladder stand using method comprises the following steps:

step 1) taking the direction of the driving wheel mechanism as the front of the multifunctional walking aid for the old people;

step 2) the controller controls the driving motor to rotate reversely, the driving motor rotates reversely to drive the first rotating shaft to rotate reversely, and the first rotating shaft rotates reversely to drive the first three-impeller to rotate to a position completely overlapped with the second three-impeller;

step 3) the controller controls the driving motor to rotate in the forward direction, the driving motor drives the first rotating shaft to rotate in the forward direction, the first rotating shaft drives the second rotating shaft to rotate synchronously under the action of the unidirectional power transmission mechanism, so that the first three-impeller and the second three-impeller rotate synchronously forward, when the first three-impeller and the second three-impeller rotate forward, a gap between two adjacent blades of the first three-impeller and the second three-impeller clamps a stair or a step at a corresponding position, the blades at the corresponding position on the first three-impeller and the second three-impeller abut against the upper surface of the stair or the step, the first three-impeller and the second three-impeller rotate continuously forward, and the blades of the first three-impeller and the second three-impeller abutting against the step or the stair rotate forward and drive the whole multifunctional walking aid to lift and move forward, so that the crossing of a single-stage step or the stair is completed;

and 4) repeating the step 3) until all steps or stairs are crossed.

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